Water tube steam generator



Nov. 10, 1931. R. KLEIN 1,831,417

WATER TUBE STEAM GENERATOR Filed July 16, 1929 INJErJ-FDR;

WWW fi EV Patented Nov. 1 0, 1931 UNITED STATES PATENT OFFICE RUDOLF KLEIN, or wm'rnnrnun, swrrznnnnnn, ASSIGNOB. TO THE. FIRM or SULZER rnrmns soornrn ANONYME, or wmrnn'rrxun, SWITZERLAND WATER TUBE STEAM GENERATOR Application filed July 16, 1929, Serial No. 378,602, and in Switzerland July 25, 1928.

;, that in the free space left between the water tubes of the inclined headers and those running along the wall. of the boiler, devices, e. g., superheaters, feed water preheaters, air preheaters, etc, are placed and connected in such a way as to absorb waste heat from the boil-er. I

A method of execution of the subject matter of the invention is represented in the drawings, in which Figure 1 shows diagrammatically an improved water tube steam generator in side elevation, and

Figure 2 is a section on the line II-II of Figure 1.

In the figures the headers?) can be seen together with the water tubes 9 inserted therein. The headers are arranged in two groups a and Z) which form an angle w with one another. The angle formed by the headers opens toward the furnace in the bottom of the shape of the inside of a roof, which furnace may consist of a grate for pulverized coal, as shown in Fig. 1, or anoil burning device. There is also a group alongside each wall. The groups of tubes running along the boiler wall 15 include headers 12 and 13 on the extreme outside, and act as a heat protection for the wall 15 surrounding the boiler. There is thus provided a pair of spaces 11 defined by the dotted lines 10. In these spaces, thus provided, I contemplate connecting superheaters, of known form and therefore,

not detailed in the drawings.

By this arrangement of the elements of such a boiler, the ordinarily inelficient fueleconomizer, such as a smoke burner, can be obviated, and yet all the heat generated by the boiler will be available.

I claim:

In a water tube boiler having two groups of headers interconnected by water tubes eX- posed to the same furnace and inclined t0-' ward oneanother at an angle opening in the direction of the furnace, additional headers disposed along adjacent the inside of the wall surrounding the boiler to protect the latter, and a superheater in the space between the water tubes of the said inclined headers and the protective headersextending along the boil-er wall. p

In testimony whereof I have afiixed my signature.

RUDOLF KLEIN.

CERTIFICATE OF CORRECTION.

Patent No. 1,831,417. Granted November 10, 1931, to

RUDOLF KLEIN.

It'is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows: Page 1, line 30, strike out the words "the bottom of" and insert the same to follow the word "toward" in the same line; and that the said Letters Patent should be read with this cor.

rection therein that the same may conform to the record of the case in the Pat ent Office.

Signed and sealed this 9th day of February, A. D. 1932.

M. J. Moore, (Seal) Acting Commissioner of Patents. 

